RAPPORTS. XIII G 2: THOMPSON 



26 



Fig. 3 1 . Average Catch per hour of Cod at all stations in the Moray Firth. 



of all fish, throughout the 

 Moray Firth, and here 

 again the comparative pau- 

 city of Cod in the Moray 

 Firth as compared with the 

 Firth of Forth (fig. 23), is 

 clearly indicated. 



In the above brief Re- 

 port I have not entered into 

 the subject in very great 

 detail; but I have in the 

 first place tried to indicate 

 certain methods, in the way 

 of Tables, curves and charts, 

 which seem to me most 

 suitable for epitomising the 

 broad results of our very 

 copious trawling statistics. 

 In the second place, I have, 

 I hope, been able to show, 

 firstly, the rate of growth of 

 the Cod during its first six 



years with an approach to 

 accuracy, to indicate also 

 the main features of the 

 distribution of the Cod ac- 

 cording to size and age in 

 the Firth of Forth and in the 

 Moray Firth, and in parti- 

 cular to demonstrate the re- 

 markable exodus from the 

 Moray Firth of the Cod at 

 a certain period of their lives, 

 and their return to it at a 

 later period. 



Fig. 32. Proportion of Cod to the Total Catch of. all fish, 

 throughout the Moray Firth. 



